Cocktail shaker



FIG. 1 is a front perspective view of the cocktail shaker;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a back view of FIG. 1;

FIG. 4 is a right side view of FIG. 1;

FIG. 5 is a left side view of FIG. 1;

FIG. 6 is a top view of FIG. 1; and,

FIG. 7 is a bottom view of FIG. 1. 

CLAIM I claim the ornamental design for the cocktail shaker, as shown and described. 